package demo4.controller;

import demo4.mapper.IUserMapper;
import demo4.pojo.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import java.util.List;
import java.util.Scanner;

@Component
public class UserController {
    @Autowired
    private IUserMapper userMapper;

    public void start() {
        System.out.println("请选择对应的操作，输入序号：");
        System.out.println("1.注册,2.登录,3.修改用户信息，4.用户列表,5.删除用户");
        Scanner scanner = new Scanner(System.in);
        int num = Integer.parseInt(scanner.nextLine());
        switch (num) {
            case 1:
                regUser();
                break;
            case 2:
                loginUser();
                break;
            case 3:
                updateUser();
                break;
            case 4:
                listUser();
                break;
            case 5:
                deleteUser();
                break;
            default:
                System.out.println("其他功能完善中，目前404");
                break;
        }
    }


    public void deleteUser() {
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入要删除的用户的用户名:");
        String username = scanner.nextLine();
        if (userMapper.selectByUsername(username) == null) {
            System.out.println("用户名不存在");
        } else {
            int num = userMapper.delete(username);
            System.out.println(num > 0 ? "删除成功" : "用户名无效");
        }
    }


    public void listUser() {
        List<User> users = userMapper.selectAll();
        for (User user : users){

            System.out.println("用户列表如下："+user);
        }

    }

    public void updateUser() {
        System.out.println("修改用户信息:");
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入要修改的用户的用户名:");
        String username = scanner.nextLine();
        if (userMapper.selectByUsername(username) == null) {
            System.out.println("用户名不存在");
        } else {
            System.out.println("请输入新密码:");
            String password = scanner.nextLine();
            System.out.println("请输入新昵称:");
            String nickname = scanner.nextLine();
            System.out.println("请输入新年龄:");
            int age = scanner.nextInt();
            User user = new User(null, username, password, nickname, age);
            int num = userMapper.update(user);
            System.out.println(num > 0 ? "修改成功" : "用户名无效");
        }
    }

    public void regUser() {
        System.out.println("欢迎注册");
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入用户名");
        String username = scanner.nextLine();
        System.out.println("请输入密码");
        String password = scanner.nextLine();
        System.out.println("请输入昵称");
        String nickname = scanner.nextLine();
        System.out.println("请输入年龄");
        Integer age = scanner.nextInt();
        if (userMapper.selectByUsername(username) != null) {
            System.out.println("用户名已被注册");
        } else {
            User user = new User(null, username, password, nickname, age);
            int num = userMapper.insert(user);
            System.out.println(num > 0 ? "注册成功" : "注册失败");
        }
    }

    public void loginUser() {
        System.out.println("欢迎登录");
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入用户名");
        String username = scanner.nextLine();
        System.out.println("请输入密码");
        String password = scanner.nextLine();
        if (userMapper.selectByUsername(username) == null) {
            System.out.println("用户名不存在");
        } else {
            User user = userMapper.selectByUsername(username);
            if (user.getPassword().equals(password)) {
                System.out.println("登录成功，欢迎" + user.getNickname() + "回来");
                System.out.println(user);
            } else {
                System.out.println("密码错误");
            }
        }
    }
}
